9/28 Write a program to swap the values of two variables

Question

Write a program to swap the values of two variables. The program will ask the user to input variables x and y with numerical values. You must write code that exchanges their values: the value of x after your code runs must equal the value that y had before your code ran, and the value of y after your code runs must equal the value that x had before your code ran.

寫一個交換兩個變數的程式

Example input:

3
5

Example output:

5
3

Remember: Your output may be 100% correct, but your code matters!

Comments

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Answer 1

Hidden content!
#include<stdio.h>

int main()
{
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**     * **   *****  ** **
*******  **  ** *   ****  ** **
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*******    * ** *  * * *****     ** 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 2

Hidden content!
#include <stdio.h>
int main()
{
* **       * * **   *  **  *** first_number;
*  *     ****** *   ******    second_number;
  * * * * *    * *** ******   ** swap;

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  * ** * ****  *****  * * ***   **  **  * ***      * * 
* ** ** *     *   *  * ***  *** 0;

}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 3

Hidden content!
#include<stdio.h>
int main(){
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***      ** ** *   *  *     ****  *     *    **   * **   *  **
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return 0;}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 4

Hidden content!
#include<stdio.h>
int main()
{
int a,b;
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*  * **      * *  * ** * * * *   * ****   **** **  *  
return 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 5

Hidden content!
*  ** ***  *  *    *
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   ***  ***
 *** * *   **      of x and y: ***  *   * *
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* * *
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*  ** * *      * x  * y   *     *  *  ******* * 


*** 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 6

Hidden content!
* ** * * ** *  *****    
int  *      
{
*  *     * *** a,b,swap;
  *   **** * ****   * * * 
****  * ******  * **** *
swap=a;
a=b;
b=swap;
*    ****  *     *  a);
** *  ****  *  **  **
**** ** ****  ** 0 ;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 7

Hidden content!
 **  * *    **   *  
main()
{
**  ****  *** *  *  *** **
*** * *     *** ** * *   **  
*   *  * **** *** * * * 
swap=a;
a=b;
b=swap;
 *   **  ** *****   * a);
**** * ****    ** **  ** 
*  **  **  ** *** 0 ;
}

Comments

prog.c:2:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~

Answer 8

Hidden content!
 * ***  * ** *****
 int main(){
int a,b;

* * *    ** * ***  ** * ** **      ** * *  ** ***  ** * ****** * *** * ***  **

   ***    **   *** * **  *** * **  *    *   *    *   

return 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 9

Hidden content!
   **  **  * *  ****
 *   *      main(){
int a,b;

* * *** ***   *** **   ***   ** * *   **** ** **    ****  *   * * *****  

  *  **  **  * *  ***  ****    ***  ** *  ***  *   *

return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 10

Hidden content!
#include <stdio.h>

int main(){
*  *     **    *  **  ****** * *
** *  * *  *   ***** *  x,y,temp;
****  *  *  * *  *  *   **
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   **     ** ****  *   * *  ****** **      * *  *  **  **  * 
    
*****  *  *    **** ** ********  = x;
 * **  *  **   * * *  **   ** = y;
**** **  * ** ***  *  **** = temp;
*   **    ** * *** **   * *  * 
** *  *  ***  * ***  ** ***   ** *  * **  ***   *  x,y);
 *  *  **    * * *  **  * ** 
 * * **  * * *  **  ** * *  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output